Spinning and twisting machine



Nov. s, 1946. H. A. BOYD 2,410,705

SPINNING AND TWISTING MACHINE Filed March 28, 1945 2 Sheets-Sheet 1 Nov. 5, 1946.

H. A. BOYD SPINNING AND TWISTING MACHINE Filed March 28, 1945 2 Sheets-Sheet 2 retested s; are

hiildgldb STDIG MAQa-ili l l Harold Arthur Boyd, Glasgow, Scotland Application March 28, 1945, Serial No. 585,285 In Great Britain April 20, 1944 In present-day practice a spindle or group of spindles or flyers is driven by a single tape or cord from a main driving drum which runs the length of the frame. This tape or cord in most cases requires to be light and flexible as it has to pass around a small diameter whorl on the driven spindle or fiver. The said tape or cord may be tensioned by an auxiliary weighted movable tension pulley, around which the tape or cord runs a whorl on the spindle or rlyer, lateral move-' ment of said intermediate whorl serving to tension the secondary tape of cord.

As the intermediate whorl may be larger than the whorl mounted on the associated spinning spindle or dy r, can carry a much heavier primary drivi tape or cord, giving longer life and a positiv drive, while the secondary tape or cord ma e 311 is endless as it does not pass around driving drum. The endless tape or cord may be slipped on to the respective whorls (not sewn in place on the spinning irame) and has a longer life than tapes or cords oi other types.

When an intermediate whorl, mounted as described, is used on a stop motion machine, it is also adapted to be moved towards the spinning spindle or dyer by hand or automatically, and thus to slaolzen the secondary tape or cord which then ceases to move, so that the spindle or flyer stops while the primary tape or cord continues to run as usual.

In addition to the lateral movement the intermediate whorl may be given an axial movement, to bring a deadsmiace which is coaxial with the said intermediate whorl into the plane of the secondary tape or cord and of the associated whorl on the driven spindle or flyerl, so that a quicker stop is brought about.

in what follows we shall assume that one pri- 5 Glaims. (01. 57-164) mary tape or cord serves a plurality of spindles or fiyers. In the accompanying drawings Fig. 1 is an elevation partly in section and Fig. 2 a diagrammatic plan illustrating a spindle drive accordingto the invention as applied to a double-sided machine. Fig. 3 is a diagrammatic elevation showing a modification as applied to a single sided machine. a

The practical application of the invention illustrated in Figs. 1 and 2 is adapted to a machine with ordinary framework as shown in British patent specif cation No. 113,687, with twisting spindles t, a main driving drum 5, and a swinging weighted tension pulley Behind the spindles 3 and between them and the drum l we mount rods 29 substantially parallel to the respective spindles one red for each spindle. On these rods we pivot brackets 25 for swinging movement. To one side or each rod lo we mount on the respective swinging bracket ll a dead spindle 22. On each dead spindle 22 we mount an intermediate whorl it of suficient axial length to carry two tapes one above the other. The

primary driving tape 2 comes from the main drum II and passes round the tension pulley t and around the driven portion of each of two intermediate whorls 233 on each side of the frame (four in all), and bacl: to the drum l. @n the lower or driving part of each lntermectliate whorl I 23 we mount a secondary tape 2*, the said tape passing around the whorl S of one twising spin die 33. In line with the intermediate whorl we mount on the dead spindle a collari l of approximately the same diameter as the whorl Above the intermediate whorl we mount a lever 25 on a horizontal stud it. At one end of one enact the lever 25 is a weight: other arm oi the lever 25 is connected to a preferably upright rod 5 with a catch t normally preventing it from moving upwardsfsaid rod l: being in operative connection with thread feeler mechanism of the kind described in the said specification No. 113,687. The second arm of the lever 25 is also connected by a wire link 27? to the swinging bracket all by engagement with an eye 22 in the end of the dead spindle 22. On being disengaged from its catch 6' by operation of the thread feeler mechanism due to failure of thread, the upright rod 5 moves upwards on the tilting of the lever 25. A depending arm 28 on the lever 25 abuts against the back of the swinging bracket 2i and forces it towards the spindle t and thereby slackens the secondary tape 2*. As the end of the second arm oi the the main driving drum 3 it also shifts, through the link 21, bracket 2i, the whorl 23 and the dead collar 24 in axial direction. The slackened secondary tape 2 then rests on the dead surface 24 and-stops, while the primary tape 2 continues to run. When the upright rod 6 is again depressed into its catch 6', the operations are reversed-the tape 2 slips back on to its driver and is tightened, and so drives the spindle 3.

The lever 25 with connections may be dispensed with when stopping of individual spindles is not required.

The intermediate whorls 23 are shown as being rotatable about vertical axes; they may, however, be rotatable about horizontal or inclined axes.

In the modification illustrated in Fig. 3 the intermediate whorl 23 is devised to apply tension to the tapes 2, 2 in two directions approximately at right angles to one another, namely, to the primary tape 2 which is approximately vertical and which drives the intermediate whorl 23 from i, and to the secondary tape 2 which runs substantially horizontally from the intermediate whorl 23 to the flyer or spindle whorl 3.

The intermediate whorl 23 is mounted above the drum l on the inner arm of a horizontal twoarmed lever 30 which is mounted on a fulcrum stud 3| and to the outer arm of which lever is applied a weight whereby to exercise an upward effort on the whorl 23 and thus to apply tension in vertical direction to the primary tape 2.

The fulcrum stud 3| is carried by an upstanding arm 32 of a bell-crank lever 32, 33 which is mounted on a shaft or stud 34 the axis of which is parallel to the axes of the whorl 23 and of the um l, the other arm of said bell-crank lever lever 25 rises, the swinging,

, 4 extending substantially horizontally in the direction away from the flyer or spindle and being influenced by a weight whereby to urge the whorl 23 horizontally in the direction away, from the flyer or spindle whorl and thus apply tension in a horizontal direction to the secondary tape 2.

What is claimed is: i

' 1. In a spinning 0r twisting machine, the combination with. a main driving drum and a spindle having a whorl, of an intermediate whorl movable laterally towards and away from said spindle, a primary flexible driving element connecting said main driving drum and said intermediate whorl, and a secondary flexible driving element connecting said intermediate whorl and said spindle whorl.

2. In a spinning or twisting machine, the combination claimed in claim 1 in which the intermediate whorl is carried on a movable bracket and adapted, when it is desired to stop the spindle, to be moved towards the spindle, to slacken the secondary flexible driving element.

'3. In a spinning or twisting machine,

at right angles to one another.

HAROLD ARTHUR BOYD.

the com-- bination claimed in claim 1 including a dead sur- 

